Supplies/Materials for DIY Fiberglass Nose Cone.

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If it was me, I'd start by melting wax or paraffin into the,wood and on the end of the dowel. Or use grease. Or oil. I wouldn't be surprised if cooking oil, lard or butter worked, though in that case your wood might eventually get rancid. ;-)

If that didn't work, I might try drilling an appropriately sized hole in some thick, slippery plastic I found that someone was throwing out

Or I might look at my collection of brass tubing. I might jam a short piece of appropriate size on the end of the dowel and glue the next size up in the piece of wood. K&S brass tubing comes in some sizes that fit very nicely. Maybe with something rubbery to allow slight misalignment.

As far as bearings, there are some Hillman bronze bearings on the Lowes web site. I imagine the web site will tell you if they're in stock and even the aisle and bay.

In normal hardware stores, you can usually find bearings, bushings, etc. in the section with all the little drawers that slide out with thin boxes on them. And they'd be easier to find in an old style hardware store than in most home centers.

If you don't mind paying several more bucks, McMaster.com has more bearings than you can shake a stick at. If you live in an industrial area, there may be a store that specializes in bearings. There was a place within walking distance of my house that specialised in bearings.
 
I've been thinking of turning something out of foam myself, so the following list of bearings wasn't a total waste of time:

https://www.lowes.com/pd/Hillman-1-Count-3-8-in-Bronze-Machine-Bushing/3024782

Or nylon:
https://www.lowes.com/pd/Hillman-2-Count-Standard-SAE-Flat-Washers/3012447

Or steel:
https://www.lowes.com/pd/Hillman-3-8-in-x-1-2-in-x-1-in-Seamless-Steel-Spacer/3012477

Maybe you could find the right size of one of these, or a bushing to adapt:
https://www.lowes.com/pd/Dial-Steel-Brass-Rubber-Evaporative-Cooler-Motor/3092837

this one is supposed to be "self-aligning", which may be helpful if you don't get the drill exactly where it should be:
https://www.mcmaster.com/3813T1/

very inexpensive. I suspect this would be just fine at higher rpms as long as the load was less than the rated 185 lbs and you oiled it from time to time:
https://www.mcmaster.com/6391K624/
You probably can't glue anything to such a bearing, so it should be a press fit in the hole. Hardware stores typically have these.

similar but with flange:
https://www.mcmaster.com/6338K414/

----

https://www.mcmaster.com/9960T84/

https://www.mcmaster.com/products/bearings/conveyor-roller-bearings~/axle-diameter~3-8/

https://sciplus.com/medium-skateboard-bushing-pkg-25/ probably should lube

Chances are, you have something in your house that will work.
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Because of the mess, I think I'd try to set it up for wet sanding, but that obviously limits the rpm if I want it to be mess free. That might make it harder to keep it round. If you were wet sanding, you'd probably want to keep it under 150 rpm to avoid getting sprayed.
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If I was at your house, I bet I could find something you already have that would work.
 
I've been thinking of turning something out of foam myself, so the following list of bearings wasn't a total waste of time:

https://www.lowes.com/pd/Hillman-1-Count-3-8-in-Bronze-Machine-Bushing/3024782

Or nylon:
https://www.lowes.com/pd/Hillman-2-Count-Standard-SAE-Flat-Washers/3012447

Or steel:
https://www.lowes.com/pd/Hillman-3-8-in-x-1-2-in-x-1-in-Seamless-Steel-Spacer/3012477

Maybe you could find the right size of one of these, or a bushing to adapt:
https://www.lowes.com/pd/Dial-Steel-Brass-Rubber-Evaporative-Cooler-Motor/3092837

this one is supposed to be "self-aligning", which may be helpful if you don't get the drill exactly where it should be:
https://www.mcmaster.com/3813T1/

very inexpensive. I suspect this would be just fine at higher rpms as long as the load was less than the rated 185 lbs and you oiled it from time to time:
https://www.mcmaster.com/6391K624/
You probably can't glue anything to such a bearing, so it should be a press fit in the hole. Hardware stores typically have these.

similar but with flange:
https://www.mcmaster.com/6338K414/

----

https://www.mcmaster.com/9960T84/

https://www.mcmaster.com/products/bearings/conveyor-roller-bearings~/axle-diameter~3-8/

https://sciplus.com/medium-skateboard-bushing-pkg-25/ probably should lube

Chances are, you have something in your house that will work.
---------
Because of the mess, I think I'd try to set it up for wet sanding, but that obviously limits the rpm if I want it to be mess free. That might make it harder to keep it round.
 
I'm sure most guys here are familiar with Thayercraft for glass cloth. If you get on his email list, you'll get several sale emails per month. I've got some great deals over the years. He carries the .56 and .75 oz cloth, for rc plane and rocket work. Check him out, ; )

https://www.thayercraft.com/
 
I'm sure most guys here are familiar with Thayercraft for glass cloth. If you get on his email list, you'll get several sale emails per month. I've got some great deals over the years. He carries the .56 and .75 oz cloth, for rc plane and rocket work. Check him out, ; )

https://www.thayercraft.com/
Does he sell in smaller quantities for people who aren't building half scale models? ;-)
 
I'm going to try the bronze bushings. I have a idea in mind for a sort of "table" to give this another try. Thank you for finding them

If this doesn't work I will be looking for a hot wire cutter that I bought years ago and never did use

-Bob
 
You could print the nosecone in vase mode (single wall) and either glass it externally if you don't mind the cleanup or glass it internally just for the strength.
 
Are you thinking like 3d printing? I thought about that and I've studied up a little watching YouTube videos about designing nose cones in programs like free cad but bottom line us that I don't have access to a printer.

Bob
 
Are you thinking like 3d printing? I thought about that and I've studied up a little watching YouTube videos about designing nose cones in programs like free cad but bottom line us that I don't have access to a printer.

Bob
If you're in a club, someone will have one. Most people will print stuff for others for free, or costs, or worst case profit. As long as it's not taking advantage of them.... You can export the shape directly from Open Rocket these days.
I'd be happy to print one, but the postage from OZ would be expensive.
 
If you're in a club, someone will have one. Most people will print stuff for others for free, or costs, or worst case profit. As long as it's not taking advantage of them.... You can export the shape directly from Open Rocket these days.
I'd be happy to print one, but the postage from OZ would be expensive.
Maybe 3D print a mold? That way you can use better materials for less weight, unless you need noseweight.
 
Maybe 3D print a mold? That way you can use better materials for less weight, unless you need noseweight.
Most nosecones need more weight than the absolute minimum weight you could make them. So I agree that making a mould would allow you to create a minimum weight nosecone, but for most people it's not required and the simplicity of printing the shape and then glassing internally or externally appeals to me. I'm a best bang for your buck person. Not a record breaker. Same with the fin discussion we had. Although reduced fin weight is a benefit as the weight is at the wrong end of the rocket. So you coud be right on them.... :)
 
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